Governor mechanism for internal-combustion engines.



E.A.JOHNS T ON.' v GOVERNOR MECHANISM FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED APR-1.1912.

I 1 99, 1 88 Patented Sept. 26, 1916.

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IIIIII E. A. JOHNSTON.

GOVERNOR MECHANISM FOR INTERNAL COMBUSTION ENGINES;

APPLlCATlON FILED APR.1. 1912.

1,1 99,188. Patented Sept. 26,1916.

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E. A. JOHNSTON. GOVERNOR MECHANISM FOR INTERNAL comausnou ENGINES. APPLICATION FILED APR. 1. {912.

1,199,188. Patented Sept. 26,1916.

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UNITED STATES PATENT OFFICE.

EDWARD A. JOHNSTON, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO INTERNATIONAL HARVESTER CORPORATION, A CORPORATION OF NEYV JERSEY.

GOVERNOR MECHANISM FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Sept. 26, 1916.

Application filed April 1, 1912. Serial No. 687,836.

To all whom it may concern: I

Be it known that I, EDWARD A. JOHN- STON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Governor Mechanism for Internal-Combustion Engines, of which the following is a specification.

My invention relates to governor mechanism of the hit and miss type, and is adapted for use in particular in connection with internal combustion engines having two power cylinders; the object being to provide a construction that may be easily and readily adjusted in a manner whereby the power delivered to the crank shaft is equally generated by the individual cylinders and the rate of speed of the engine effectively controlled. These objects are attained by means of the mechanism illustrated by the accompanying drawings, in which Figure 1 represents a top plan view of an internal combustion engine having two power cylinders arranged upon opposite sides of the crank shaft, having my improved governor mechanism embodied in the construction thereof; Fig. 2 is a vertical cross section of part of the governor mechanism designed to illustrate the manner of adjusting the parts thereof whereby the maximum speed of the engine may be regulated; Fig. 3 is an end elevation of Fig. 1; Fig. at represents a. part of Fig. 8 on an enlarged scale and designed to illustrate the operation of the swinging detent in connection with the valve operating rod; Fig. 5 represents a plan view of the swinging detent arm; Fig. 6 is a side elevation of Fig. Fig. 7 is a vertical section of the governor mechanism designed to illustrate the driving connections thereof with the cam shaft of the engine and the connections thereof with the swinging detent; Fig. 8 is a top plan view of part of the governor mechanism; Fig. 9 is a plan view of a detail part of the governor mechanism; and Fig. 10 is a side elevation of Fig. 9.

The same reference characters designate like parts throughout the several views.

1 represents the crank case of an internal combustion engine having the power cylinders 2 secured to opposite ends thereof and offset thereon, 3 the crank shaft having fly wheels 4: secured to opposite ends thereof, 5 the cam shaft journaled in bearings carried by the crank case and operatively connected with the crank shaft by means of the usual two to one pinion 6 secured to the crank shaft and the gear wheel 7 secured to the cam shaft.

8 represents longitudinally movable valve rods having the inner ends thereof slidably mounted in bearings carried by the crank case and provided with rollers 9 journaled thereon and adapted to engage with a cam 10 secured to the cam shaft 5 in a common way, the opposite end of each rod being pivotally connected with one end of a rocker arm 11 that is pivotally connected with the head 12 of the power cylinder, the opposite end of said arm being pivotally connected with the stem of the exhaust valve 13. 7

1i represents one of the intake valves carried by the cylinder head and provided with a collar 15 secured to the stem thereof and adapted to engage with the forked end 16 of an arm 17 that is secured to the lower end of a vertically arranged rock shaft 18 journaled in bearings carried by the cylinder head and provided with a laterally turned arm 19 at the upper end thereof.

20 represents a laterally projecting arm having one end secured to the valve rodand the opposite end thereof connected with the arm 19 by means of a bolt 20 that is slidably and operative between the two arms in a manner to yieldingly rock the shaft 18 in a direction to hold the intake valve in a closed position when the exhaust valve is opened by a movement of the valve rod in one direction, and to permit the intake valve to open when said rod moves in an opposite direction.

22 represents a gear wheel secured to the cam shaft 5 and engaging with a pinion 23 secured to the lower end of a vertically arranged shaft 24: that is journaled in a bearing 25 integral with a plate 26 forming part of the upper side or cover of the crank case, and 27 represents a collar secured to the middle portion of the shaft, and 28 a washer between the collar and the end of the bearing.

29 represents a sleeve slidably mounted upon the shaft and provided at the lower end thereof with an enlarged cylindrical portion. that surrounds the collar 27 and the upper end of the bearing, and 30 a ring secured to the lower end of the cylindrical portion and having the periphery thereof extending beyond the outside wall of the cylinder, forming a flange at the lower end thereof, upon which rests a semi-circular shoe 31, having sleeve portions 32 that re ceive a pin whereby the shoe is pivotally connected with arms 34: projecting laterally from opposite ends of a sleeve member 35 secured to rook shaft 36 journaled in bearings 37 carried by the plate 26. i

38 represents laterally extending ear members upon opposite sides of the upper end of sleeve 29 and spaced apart in a manner to receive between them levers 39 carrying governor balls 40, the levers being free to turn about connecting pins 41 and provided with inwardly projecting arms 42 provided with Tshaped heads 13 that are received by cavities formed in opposite sides of a head 44; that is secured to the upper end of shaft 24 by means of a key s5 and nut 16, and provided with oppositely disposed arms d7, having vertically arranged threaded openings therein that receive the upper threaded ends of rods %8, the lower ends of said rods being slidably received by openings in ear members 49 extending outward from the upper end of the enlarged cylindrical portion of sleeve and the middle portion thereof provided with collars 50.

51 represents compression springs encircling the rods and operative betweenthe col.- lars and the ear members 49 in a manner to yieldingly resist an upward movement of the sleeve 29 relative to the head 44:. The head 44 is provided with an angular portion 4& upon the lower side thereof that is received between ear members 4% at the upper end of the sleeve 29 whereby the latter is caused to rotate with said head. Secured to opposite ends of rock-shaft 36 are lever arms 52 having lateral openings therein that receive one end of rods 53 in a slidable manner, the rods being threaded and provided with adjusting nuts 54 at the outside ends thereof that engage with the side of the arms in a manner to limit a sliding movement of the rod in one direction, and 55 represents other nnts upon the opposite side of the arms, and 56 a compression spring interposed between said nuts and arms in a manner to yieldingly resist a movement of the rods in an opposite direction, the opposite ends of the rods 53 being provided with eye portions that receive studs 57 carried by swinging detents 58 having the upper ends thereof pivotally connected with the crank case, and the lower ends provided with hardened contact plates 59 that are adapted to engage with complemental plates 60 secured to the bracket members 61 carried by the valve rods in a manner to secure said rods in a position whereby the exhaust valves are held open and the intake valves closed when the. engine has attained a speed said rods.

In operation the valve rods are actuated by the cam upon the cam shaft in a'common way, and the governor shaft is rotated by means of the gear connections therewith. As the engine gains speed the governor balls swing outward and thereby cause levers 39 to turn about the fulcrum pins i1 in a mannerto lift the sleeve 29 against the force of compression springs 51 and to carry therewith the shoe 31 which, through the connection thereof with rock shaft- 36, rocks the latter in a direction to cause the swinging detents 58 to engage with the valve rods in a locking manner when the engine has exceed ed a predetermined rate of speed, and when the speed of the engine is reduced to a normal rate, the weight of the shoe 31 causes the rock shaft 36 to turn in an opposite direction and release the detents from engagement with the valve rods.

\Vhat I claim as my invention, and desire to secure by Letters: Patent, is:

1. In combination, a Valve, means for operating said valve, a pivotally mounted arm for arresting movement of said operating means, governor controlled rock shaft, a. member connecting said arm and rock shaft,

and oppositely acting resilient members for.

effecting movement of said connecting member and arm.

2. In combination, a valve, means for op erating said valve, a detent for arresting movement of said operating means, a governor controlled rock shaft, a member connecting said. detent and rock shaft, and resilient means between said detent and rock shaft for releasing said means.

3. In combination, a valve, means for operating said valve, a detent for arresting movement'of said operating means, a governor controlled rock shaft, a member con necting said detent and rock shaft, and yieldable means between said detent and rock shaft to release said operating means.

at. A governor mechanism for internal combustion engines having, in combination, a vertically arranged rotatable governor shaft jonrnaled in bearings carried by a fixed part of the engine and operatively connected with a movable part thereof, a sleeve slidably mounted upon said shaft and rotatabletherewith, said sleeve being provided with a peripheral flange at the lower end thereof, a shoe engaging with said flange in a manner to be raised thereby, governor weights carried by said sleeve and controlling a sliding movement thereof, a rock shaft journaled in bearings carried by a fixed part of the engine, a sleeve secured to said rock shaft and provided with laterally projecting arms, said shoe being pivotally connected with said arms, lever arms secured to said rock shaft, valve controlling rods slidably mounted upon the engine, swinging detents adapted to engage said rods in a manner to suspend the operation thereof when the engine has reached a predetermined rate of speed, and a yielding connection between said detents and the lever arms secured to said rock shaft.

5. A governor mechanism for internal combustion engines having, in combination, a vertically arranged rotatable governor shaft journaled in bearings carried by a fixed part of the engine and operatively connected with a moving part thereof, a head secured to the upper end of said shaft, said head including oppositely disposed radially arranged arms and an angular boss portion at the lower side thereof, a sleeve slidably mounted upon said shaft and having the upper end thereof slidably engaging with said angular boss portion of said head in a manner whereby said sleeve is caused to rotate with said shaft, double armed levers pivotally connected with said sleeve upon opposite sides thereof, governor Weights carried by one of said arms, the remaining arm engaging with said head whereby a swin ing movement of said governor weights, assisted by centrifugal force, will lift said sleeve, ear members arranged upon opposite sides of said sleeve, near the lower end thereof, adjustable rods carried by said radially arranged arms, forming part of said head and provided with collars upon the body portion thereof, and compression springs carried by said rods and operative between said collars and said ear members in a manner to yieldingly resist an upward movement .of said sleeve.

6. A governor mechanism for internal combustion engines having, in combination, vaive mechanism including longitudinally movable valve operating rods, a rock shaft arranged parallel with said rods and journaled in bearings carried by a fixed part of the engine, lever arms secured to opposite ends of said rock shaft, pendent swinging detents pivotally mounted upon a fixed part of the engine and adapted to engage with said valve rods in a manner to suspend the operation thereof, rods having one end pivotally connected with said detents and the opposite ends thereof yieldingly and slidably connected with said lever arms, tension springs having one end connected withdetents pivotally mounted upon a fixed part of the engine and adapted to engage with said valve rods in a manner to suspend the operation thereof, rods having one end pivotally connected with said detents and the opposite ends provided with threaded portions slidably received by openings in said lever arms, adjusting nuts upon the ends of said rods and engaging with the outside face of said lever arms, compression springs encircling said rods and operative between the opposite face of said arms and the adjusting nuts upon the rods in a manner permitting said arms a limited movement toward said detents independent of said rods, and governor mechanism adapted to control a rocking movement of said shaft.

8. A governor mechanism for internal combustion engines having, in combination, a valve mechanism including intake and exhaust valves, longitudinally movable and horizontally arranged valve controlling rods having one end pivotally connected with one end of a rocker lever pivotally mounted upon a fixed part of the engine, the opposite end of said lever being adapted to engage with said exhaust valve in a manner to open the same, governor controlled detents adapted to engage with said valve controlling rods in a manner to suspend the movement thereof when the engine exceeds a predetermined rate of speed, a vertically arranged rock shaft ournaled in bearings carried by the engine, having arms secured to the lower end thereof adapted to engage with said intake valves and laterally extending arms at the opposite ends, arms secured to said valve rods adjacent said laterally ex tending arms, bolts slidably received by openings in said arms and carrying compression springs operative in a manner to yieldingly retain said intake valves in a closed position when said exhaust valves are opened.

EDWARD A. JOHNSTON. WVitnesses LEO J. Fons'rnn, A. P. GAssMANN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

